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WO2018176234A1 - Base et ventilateur sans pales - Google Patents

Base et ventilateur sans pales Download PDF

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Publication number
WO2018176234A1
WO2018176234A1 PCT/CN2017/078466 CN2017078466W WO2018176234A1 WO 2018176234 A1 WO2018176234 A1 WO 2018176234A1 CN 2017078466 W CN2017078466 W CN 2017078466W WO 2018176234 A1 WO2018176234 A1 WO 2018176234A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
power system
muffler
muffling
muffler cover
Prior art date
Application number
PCT/CN2017/078466
Other languages
English (en)
Chinese (zh)
Inventor
李忠华
程杰锋
魏喜明
Original Assignee
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 美的集团股份有限公司 filed Critical 美的集团股份有限公司
Priority to CN201780001080.4A priority Critical patent/CN107636315B/zh
Priority to PCT/CN2017/078466 priority patent/WO2018176234A1/fr
Publication of WO2018176234A1 publication Critical patent/WO2018176234A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

Definitions

  • the present invention relates to the field of fans, and more particularly to a base and a bladeless fan.
  • Existing leafless fans include a base.
  • the base includes a housing and a power system disposed within the housing.
  • the outer casing is formed with an air inlet, and during operation, the power system draws in air through the air inlet and establishes an air flow.
  • the noise emitted by the power system can be diffused outward through the air inlet, resulting in a large noise of the bladeless fan.
  • the present invention aims to at least solve one of the technical problems existing in the related art. To this end, embodiments of the present invention provide a pedestal and a bladeless fan.
  • a susceptor according to an embodiment of the present invention is used for a bladeless fan, the pedestal comprising: a housing, the housing including an outer wall, the outer wall being formed with an air inlet; a power system disposed in the housing, the a power system for drawing in air through the air inlet and establishing an air flow, the power system being formed with an air inlet; and a sound absorbing structure disposed in the housing, the sound absorbing structure comprising: a first sound absorbing cover, The first muffler is formed with a first muffling cavity, the first muffler is provided with a first conductive hole communicating with the air inlet; and the second muffling is received in the first muffling cavity a cover, the second muffler cover surrounds the air inlet, the second muffler is formed with a second muffling cavity that communicates with the air inlet, and the second muffler is open to communicate with the second a second conductive via of the anechoic cavity; and a connecting tube connecting
  • the cross-sectional area of the second via hole is smaller than the cross-sectional area of the second muffler cavity.
  • the number of the connecting tubes is plural, and the number of the first through holes and the number of the second through holes are the same as the number of the connecting tubes, and the plurality of connections a tube is distributed along a circumferential interval of the first muffler cover, a distribution position of the plurality of connecting tubes and a distribution position of the plurality of first via holes and a distribution position of the plurality of second via holes correspond.
  • the plurality of connecting tubes are evenly spaced along the circumference of the first muffler cover.
  • the connecting tube has an inner diameter of 10-40 mm and the connecting tube has a length of 5-15 mm.
  • the perforations have a diameter of from 1 to 4 mm.
  • the number of perforations is a plurality, and the plurality of perforations are arranged in a plurality of perforation arrays, the plurality of perforation arrays being spaced apart.
  • the plurality of perforated arrays are evenly spaced along the circumferential direction of the tube wall of the connecting tube.
  • the first muffler cover and the second muffler cover are both cylindrical, and the first muffler cover is disposed coaxially with the second muffler cover.
  • the base includes a sound absorbing cotton disposed between the first muffler cover and the second muffler cover, the sound absorbing cotton being located in the cavity portion and covering the perforation.
  • the sound absorbing structure includes a mounting plate coupled to the first muffling cover and the second muffler cover, and the muffling structure is fixed to the housing by the mounting plate on.
  • the power system is coupled to the outer wall by an elastic member and is elastically suspended within the housing.
  • a first fixing plate and a second fixing plate are fixed in the housing, and the number of the elastic members is plural, and the plurality of elastic members constitute a first elastic member group and a second elastic member.
  • the first elastic member group elastically connects the upper end of the power system and the first fixing plate
  • the second elastic member group elastically connects the lower end of the power system and the second fixing plate.
  • a plurality of the elastic members of the first elastic member group are evenly spaced along a circumferential direction of the power system; and the plurality of elastic members of the second elastic member group are along the The circumferential direction of the power system is evenly spaced.
  • the positions of the plurality of elastic members of the first elastic member group in the circumferential direction of the power system and the plurality of elastic members of the second elastic member group are respectively The positions of the power system in the circumferential direction correspond one-to-one.
  • the upper end of the first muffler cover is provided with a convex ring
  • the upper end of the second muffler cover is provided with an annular side edge
  • the lower surface of the side edge is provided with an annular shape a groove, the convex ring being tightly received in the groove.
  • a bladeless fan according to an embodiment of the present invention includes a fan head and a base of any of the above embodiments, the fan head being disposed on the base, the fan head being used to establish the airflow established by the power system Spray out.
  • the power system includes an intake end and an air outlet end, the air outlet end being closer to the fan head than the air intake end, and the air inlet end is provided with the air inlet port;
  • the vaneless fan includes an annular seal that sealingly connects the fan head and the air outlet end.
  • the seal includes a first end and a second end, the first end sealingly connecting the gas outlet end, the first end is in a tapered expanded configuration; and the second end is sealingly connected The fan head, the end face of the second end A positioning slot is opened, and the positioning slot is snapped into the fan head.
  • the fan head is provided with an air gap slit, and the air outlet slit is curved.
  • the power system works because the through hole of the connecting pipe wall communicates with the cavity portion of the first muffler cavity between the first muffler cover and the second muffler cover.
  • the noise generated will be perforated into the cavity portion, and the noise will be reflected back and forth inside the cavity portion, thereby reducing the noise when the bladeless fan is working.
  • FIG. 1 is a perspective view of a bladeless fan according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of a susceptor according to an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional perspective view of a susceptor according to an embodiment of the present invention.
  • FIG. 4 is a partial perspective view of a susceptor according to an embodiment of the present invention.
  • Figure 5 is a perspective view of a sound absorbing structure according to an embodiment of the present invention.
  • FIG. 6 is a schematic perspective cross-sectional view of a sound absorbing structure according to an embodiment of the present invention.
  • Figure 7 is a plan view showing a sound absorbing structure according to an embodiment of the present invention.
  • FIG. 8 is a schematic perspective cross-sectional view of a first muffler cover of a muffling structure according to an embodiment of the present invention.
  • FIG. 9 is a schematic perspective cross-sectional view of a second muffler cover of the muffling structure according to an embodiment of the present invention.
  • Figure 10 is another schematic cross-sectional view of a susceptor according to an embodiment of the present invention.
  • Fig. 11 is a schematic view showing a sound pressure curve of a bladeless fan according to an embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • a bladeless fan 1000 of an embodiment of the present invention includes a base 100 and a fan head 102.
  • the fan head 102 is disposed on the base 100.
  • the fan head 102 can blow out the wind.
  • the bladeless fan 1000 is not easy to injure the user's fingers or the like because there is no exposed blade, and therefore, the bladeless fan 1000 has a safety feature.
  • the bladeless fan 1000 is small in size, making it easy for the user to clean the leafless fan 1000.
  • the base 100 includes a housing 10 , a power system 20 , and a sound absorbing structure 40 .
  • the power system 20 is disposed within the housing 10.
  • the muffling structure 40 is disposed within the housing 10.
  • the housing 10 includes a bottom plate 11 and an outer wall 12.
  • the bottom plate 11 extends outward from the outer wall 12 to make the bladeless fan 1000
  • the support surface is stably supported on the support surface, for example, a plane such as a floor or a table top.
  • the outer wall 12 is annular, and the annular outer wall 12 makes the bladeless fan 1000 more aesthetically pleasing, and the surface area of the outer wall 12 can be increased to make the inlet area larger.
  • the outer wall 12 is formed with an air inlet 121, and the air inlet 121 is formed with a plurality of air intake holes 1211 arranged in an array.
  • the air inlet 121 enables the power system 20 to draw in air to establish an air flow, such that the bladeless fan 1000 can form a wind to meet the needs of the user.
  • a plurality of intake holes 1211 are distributed along the circumferential direction of the outer wall 12. This results in a larger air intake area of the air inlet 121, which is advantageous for increasing the flow of air into the susceptor 100. In addition, it is also possible to allow air to enter from the periphery of the casing 10 to make the airflow into the susceptor 100 more uniform, thereby reducing noise when the air flows.
  • the air inlets 121 are arranged in a plurality of arrays along the circumferential direction of the outer wall 12, and the adjacent two arrays are spaced apart. As shown in Figure 2, the outer wall 12 between the array of adjacent two inlet ports 121 is of continuous construction. In addition, this also facilitates the formation of the intake holes 1211, thereby improving the yield of the housing 10.
  • the air inlet 121 is disposed close to the bottom plate 11, so that the air moves from the bottom up to the power system 20 to shorten the path and resistance of the air, and therefore, the air inlet 121 is disposed close to the bottom plate 11 to reduce noise generated by the air flow.
  • Each of the intake holes 1211 has a circular shape, and the diameter of the intake holes 1211 is 1-3 mm.
  • the diameter of the intake hole 1211 is 2 mm. This can reduce the noise generated when the gas flows while ensuring that the bladeless fan 1000 normally draws in air.
  • the spacing between adjacent two intake holes 1211 is 1-3 mm.
  • the interval between adjacent two intake holes 1211 is 2 mm. This can reduce the noise generated when the air flows.
  • the housing 10 also includes a partition 14 that extends inwardly from the outer wall 12.
  • the partition 14 is formed with a through hole 141 which is disposed coaxially with the outer wall 12.
  • the power system 20 is used to draw in air through the air inlet 121 and establish an air flow.
  • the powertrain 20 includes an impeller casing 21, an impeller 22, a motor 23, a diffuser 24, and a motor casing 25.
  • the impeller casing 21 is mounted in the casing 10, and the impeller casing 21 is formed with an air inlet 211 communicating with the intake port 121.
  • the impeller 22 is disposed within the impeller casing 21.
  • the motor 23 is used to drive the impeller 22. Specifically, the motor 23 is located in the impeller casing 21, and the output shaft of the motor 23 is fixedly coupled to the impeller 22 so that the impeller 22 can be driven to rotate when the motor 23 is in operation.
  • the diffuser 24 is disposed downstream of the air flow generated by the impeller 22, and the diffuser 24 is coupled to the impeller casing 21. Dilatation The device 24 can pressurize, decelerate and decelerate the high velocity airflow generated by the impeller 22 to direct the high velocity airflow to the fan head 102.
  • the diffuser 24 includes a plurality of fins 241 which can integrate the high-speed airflow generated by the impeller 22 and can achieve the effect of eliminating the cyclone so as to be discharged from the air outlet 242 of the diffuser 24.
  • the airflow is softer.
  • the motor housing 25 is formed outside the motor 23 and is used to fix the motor 23.
  • the motor housing 25 is connected to the impeller housing 21.
  • the motor housing 25 can prevent the motor 23 from shaking during operation.
  • a gas passage 25a is formed between the motor casing 25 and the impeller casing 21, and the gas passage 25a and the diffuser 24 are in communication.
  • the airflow generated when the impeller 22 rotates passes through the gas passage 25a and then flows to the diffuser 24, passes through the diffuser 24, and flows out of the diffuser 24 to enter the fan head 102.
  • the sound absorbing structure 40 includes a first muffler cover 41, a second muffler cover 42, and a connecting tube 44.
  • the first muffler cover 41 is formed with a first muffling cavity 411, and the first muffler cover 41 is provided with a first through hole 412.
  • the first via hole 412 communicates with the air inlet 121.
  • the second muffler cover 42 is received in the first muffler cavity 411, the second muffler cover 42 surrounds the air inlet 211, and the second muffler cover 42 is formed with a second muffler cavity 421 communicating with the air inlet 211.
  • the cover 42 is provided with a second through hole 422 that communicates with the second muffling chamber 421.
  • the connecting tube 44 is connected to the first muffling cover 41 and the second muffling cover 42 and correspondingly communicates with the first through hole 412 and the second through hole 422.
  • the pipe wall of the connecting pipe 44 is provided with a through hole 441, and the through hole 441 is connected.
  • the power system 20 is connected to the cavity portion 4111 of the first muffling cavity 411 between the first muffling cover 41 and the second muffling cover 42 due to the through hole 441 of the pipe wall of the connecting pipe 44.
  • noise generated when air is taken in from the air inlet 121 enters the cavity portion 4111 through the through hole 441, and noise is reflected and consumed inside and outside the cavity portion 4111, thereby reducing noise during operation of the bladeless fan 1000.
  • the first muffler cover 41 includes a first substrate 416 and a first side plate 417.
  • the first side plate 417 is disposed on the first substrate 416.
  • the first side plate 417 is annular and connected to the first substrate.
  • the second muffler cover 42 includes a second substrate 426 and a second side plate 427 disposed on the second substrate 426.
  • the second side plate 427 is annular and connected to the edge of the second substrate 426. .
  • the second substrate 426 is fixedly coupled with the first substrate 416 such that the first muffler cover 41 and the second muffler cover 42 are fixed, and at the same time, the first muffler cover 41 and the second muffling cover are caused.
  • the cavity portion 4111 of the first muffling cavity 411 between the covers 42 is annular to form a cavity that causes noise to be reflected cyclically, further reducing noise.
  • the first substrate 416 and the second substrate 426 can be fixed by screwing.
  • the first substrate 416 and the second substrate 426 are each provided with a mounting hole 418 through which the screw is inserted to fix the first substrate 416 and the second substrate 426 together.
  • the screw can be further connected to the bottom plate 11 of the base 100, and the sound absorbing structure 40 is fixed to the bottom plate 11.
  • the connecting tube 44 connects the inner surface of the first muffler cover 41 and the outer surface of the second muffler cover 42.
  • the sound absorbing structure 40 is easy to manufacture, reducing the cost of the bladeless fan 1000.
  • the cross-sectional area of the second via 422 is smaller than the cross-sectional area of the second silencing cavity 421.
  • the noise is difficult to propagate from the second muffler cavity 421 having a large cross-sectional area to the second via hole 421 having a small cross-sectional area, so that the sound is reflected back and forth in the second muffler cavity 421, and the bladeless fan 1000 is reduced. noise.
  • the number of the connecting tubes 44 is plural, the number of the first conductive vias 412 and the number of the second conductive vias 422 are the same as the number of the connecting tubes 44, and the plurality of connecting tubes 44 are along the first eliminating
  • the sound shields 41 are circumferentially spaced apart, and the distribution positions of the plurality of connecting tubes 44 correspond to the distribution positions of the plurality of first via holes 421 and the distribution positions of the plurality of second via holes 422.
  • the noise generated when the air enters the casing 10 can be more penetrated into the cavity portion 4111 through the through hole 441 to perform reflection elimination, further reducing the noise of the bladeless fan 1000.
  • the number of the connection tubes 44, the number of the first via holes 412, and the number of the second via holes 422 are all six.
  • the connecting tube 44 has a hollow cylindrical shape, and the first through hole 412 and the second through hole 422 are both circular.
  • the axes X of the plurality of connecting tubes 44 are distributed on the same horizontal plane to form a connecting tube layer. It can be understood that in other examples, the axes X of the plurality of connecting tubes 44 may also be distributed on different horizontal planes to form two or more connecting tube layers.
  • the number of the connecting tubes 44 may also be other numbers.
  • the number of the connecting tubes 44 ranges from 3 to 9, which ensures a certain amount of air intake and also has a better sound and noise cancellation effect.
  • the number of the connecting tubes 44 may be 1, 2, 4, 5, 8, 12, and the like.
  • the plurality of connecting tubes 44 are evenly spaced along the circumference of the first muffler cover 41. In this way, the uniform noise cancellation capability of the muffling structure 40 in all directions is achieved, and the user experience is improved.
  • the number of the connection tubes 44, the number of the first via holes 421, and the number of the second via holes 422 are all six.
  • the six connecting pipes 44 are evenly spaced along the circumferential direction of the first muffler cover 41, that is, the angle formed by the axes X of the adjacent two connecting pipes 44 is 60 degrees, and at the same time, each of the first conducting pipes
  • the hole 412 and each of the second via holes 422 are in one-to-one correspondence with the connecting pipe 44, as shown in FIG.
  • the connecting tube 44 has an inner diameter of 10-40 mm and the connecting tube 44 has a length of 5-15 mm. In this way, a better balance between the intake air volume and the sound insulation effect is ensured.
  • the inner diameter of the connecting tube 44 refers to the diameter of the passage formed in the connecting tube 44.
  • the perforations 441 have a diameter of from 1 to 4 mm. In this way, a better balance between the intake air volume and the sound insulation effect is ensured.
  • the perforations 441 are circular holes.
  • the number of perforations 441 is multiple, and the plurality of perforations 441 are arranged in a plurality of perforated arrays, the plurality of perforated arrays being spaced apart. In this way, noise in the connecting pipe 44 can be introduced into the cavity portion of the first muffling cavity 411 from a plurality of directions, and the sound absorbing noise suppressing effect is ensured.
  • the plurality of perforated arrays are evenly spaced along the circumference of the tube wall of the connecting tube 44.
  • each perforated array includes a plurality of perforations 441, and a plurality of perforations 441 of each perforated array are aligned along the axis X of the connecting tube 44.
  • the manufacturing process of the connecting pipe 44 is relatively simple, and the cost of the susceptor 100 is reduced.
  • first muffler cover 41 and the second muffler cover 42 are both cylindrical, and the first muffler cover 41 is disposed coaxially with the second muffler cover 42.
  • the first muffler cover 41 and the second muffler cover 42 are easy to manufacture, and the coaxial arrangement allows the muffling structure 40 to have a relatively uniform muffling effect in all directions.
  • the base 100 includes sound absorbing cotton (not shown) disposed between the first muffler cover 41 and the second muffler cover 42.
  • the sound absorbing cotton is located in the cavity portion 4111 and covers the perforations 441.
  • the noise entering the cavity portion 4111 of the first muffling cavity 411 from the through hole 441 is absorbed by the sound absorbing cotton, and the noise entering the cavity portion 4111 is repeatedly consumed, further improving the noise reduction effect of the bladeless fan 1000.
  • the sound absorbing cotton has a plurality of staggered pores, it has a good sound absorbing effect.
  • the sound absorbing cotton has a thickness of 5-15 mm.
  • the sound absorbing structure 40 includes a mounting plate 43 that is coupled to the first muffler cover 41 and the second muffler cover 42 and the muffling structure 40 is secured to the housing 10 by a mounting plate 43.
  • the sound absorbing structure 40 is installed by the mounting plate 43 without adversely affecting the first muffler cover 41 and the second muffler cover 42.
  • the mounting plate 43 is disposed at the upper end of the second muffling cover 42 and has an annular shape.
  • the mounting plate 43 and the second muffling cover 42 are integrally formed.
  • the mounting plate 43 and the second muffling cover 42 are assembled together to the first muffler cover 41, so that The second muffler cover 42 is housed in the first muffling chamber 411, and the first muffler cover 41 is mounted with the mounting plate 43 and then mounted to the casing 10 through the mounting plate 43.
  • the mounting plate 43 is provided with a plurality of screw holes 43a, and the mounting plate 43 can be fixed to the partition plate 14 through the screw holes 43a.
  • the mounting plate 43 is provided with a through hole 43b, and the through hole 43b communicates with the second muffling chamber 421.
  • the power system 20 is partially received in the second muffling chamber 421 through the through hole 43b, so that the second muffler cover 42 surrounds the air inlet 211.
  • the upper end of the first muffler cover 41 is provided with a convex ring 419
  • the upper end of the second muffler cover 42 is provided with an annular side edge 428, the side edge 428
  • the lower surface is provided with an annular groove 429, and the convex ring 419 is tightly received in the groove 429, as shown in FIG.
  • the cavity portion 4111 of the first muffling cavity 411 located between the first muffler cover 41 and the second muffling cover 42 can be formed into a relatively sealed chamber, so that noise in the cavity portion 4111 is not easy or impossible. Propagating to the outside further improves the noise reduction effect of the bladeless fan 1000.
  • the side edge 428 and the mounting plate 43 are connected to the upper end of the second muffler cover 42 to form a plate body 431.
  • the material of the muffling structure 40 can be saved and the manufacturing difficulty can be reduced.
  • the fan head 102 is formed with a wind tunnel and an air outlet slit 1021 that communicates with the air passage, and the air outlet slit 1021 is curved.
  • the fan head 102 is in communication with the base 100 to deliver airflow generated by the powertrain 20 into the air duct and out of the air gap 1021.
  • the air outlet slot 1021 forms a nozzle.
  • the curved air outlet slit 1021 can increase the air outlet area of the bladeless fan, thereby improving the user experience.
  • a foam may be disposed in the air passage of the fan head 102.
  • the foam can absorb the noise generated in the air passage, so that the noise of the bladeless fan 1000 can be reduced.
  • the upwardly extending portion of the fan head 102 is curved so that the air passage is curved, thereby reducing noise generated when the air flows.
  • the power system 20 includes an intake end 28 and an air outlet end 29.
  • the air outlet end 29 is closer to the fan head 102 than the intake end 28, and the air inlet end 28 is provided with an air inlet 211.
  • the bladeless fan 1000 includes an annular seal 80 that seals the connection between the fan head 102 and the air outlet end 29. In this way, the arrangement of the sealing member 80 can reduce the probability that the airflow is poured from the fan head 102 into the cavity of the base 100, thereby reducing wind noise and improving the air blowing effect of the bladeless fan 1000.
  • the fan head 102 is generally longer than the base 100, which makes the path of the airflow to the air passage longer, the resistance is larger, and the air duct has a curved shape, which makes the path Longer, more resistant. If the sealing member 80 is lacking, since the path of the air passage is long and the resistance is large, the airflow is easily poured into the cavity of the base 100, and a large wind noise is formed, and the air blowing effect is poor.
  • the sealing member 80 is disposed such that the sealing member 80 and the air outlet end 29 of the power system 20 and the fan head 102 are in a sealed state, which solves the above problems.
  • the seal 80 may be a silicone sealed hose having a hardness in the range of 50-60 and a moderately elastic stretch.
  • the seal 80 includes a first end 81 that is sealingly coupled to the gas outlet end 29 and a second end 82 that has a tapered expanded configuration.
  • the second end 82 is sealingly connected to the fan head 102.
  • the end surface of the second end 82 is provided with a positioning groove 821, and the positioning groove 821 is inserted into the fan head 102.
  • the structure of the seal 80 facilitates the mounting of the fan head 102 and the seal 80 on the base 100 and improves the sealing of the air outlet end 29 and the fan head 102.
  • the sealing member 80 and the fan head 102 are mounted on the base 100, the positioning groove 821 of the second end 82 is first directly caught in the fan head 102, and the fan head 102 with the sealing member 80 is mounted on the When the base 100 is on, the fan 102 with the sealing member 80 slides downward through the open end of the base 100 to directly fit the first end 81 into the air outlet end 29 of the power system 20 to complete the sealing connection of the sealing member 80.
  • the outlet end 29 of the 20 and the fan head 102 is the sealing member 80 and the fan head 102.
  • the number of the positioning grooves 821 is two, the second end 82 is circular, and the two positioning grooves 821 are arranged at intervals along the radial direction of the second end 82.
  • a connecting plate 50 is disposed between the base 100 and the fan head 102.
  • the connecting plate 50 connects the base 100 and the fan head 102.
  • the connecting plate 50 is connected to the upper edge of the outer wall 12.
  • a first fixing plate 26 is fixedly disposed on the connecting plate 50, and a second fixing plate 27 is fixedly disposed on the partition plate 14.
  • the second fixing plate 27 and the first fixing plate 26 are both located in the casing 10.
  • the elastic member 70 is stretched and connected to the first fixing plate 26 and the power system 20, and is connected to the second fixing plate 27 and the power system 20. That is, the power system 20 is coupled to the outer wall 12 by the elastic member 70 and elastically suspended within the housing 10.
  • the elastic member 70 allows the power system 20 to be suspended, and the vibration generated by the power system 20 is not directly transmitted to the casing 10, so that noise generated by the susceptor 100 can be reduced.
  • the upper surface of the second fixing plate 27 is provided with a first fixing portion 271, and the lower end of the power system 20 is provided with a second fixing portion 272.
  • the first fixing portion 271 is provided with a first card hole
  • the second The fixing portion 272 is provided with a second card hole.
  • One end of the elastic member 70 can hook the first card hole, and the other end of the elastic member 70 can hook the second card hole to elastically suspend the power system 20 in the casing 10.
  • the first card hole and the second card hole are each formed with a chamfered structure, so that the elastic member 70 is more conveniently installed.
  • the lower surface of the first fixing plate 26 and the upper end of the power system 20 are provided with a similar structure to the above-described fixing portion.
  • the elastic member 70 can be mounted by other means.
  • the first fixing plate 26 can be directly fixed to the inner surface of the outer wall 12 and the second fixing plate 27 can be directly fixed to the inner surface of the outer wall 12.
  • the first fixing plate 26 and the second fixing plate 27 are spaced apart.
  • the resilient member 70 is a tension spring.
  • the tensile spring 70 has a stiffness coefficient of 2-4 N/mm and an original length of 15-25 mm.
  • the tension spring 70 has a stiffness coefficient of 3 N/mm and an original length of 20 mm.
  • the number of the elastic members 70 is plural, and the plurality of elastic members 70 include a first elastic member group and a second elastic member group, and the first elastic member group is connected to the first fixing plate 26 and the power system 20 Upper end.
  • the plurality of elastic members 70 of the first elastic member group are evenly spaced along the circumferential direction of the power system 20.
  • the number of the elastic members 70 of the first elastic member group is three, and the angle between the adjacent two elastic members 70 is 120 degrees.
  • the second elastic member group connects the second fixing plate 27 and the lower end of the power system 20.
  • the plurality of elastic members 70 of the second elastic member group are evenly spaced along the circumferential direction of the power system 20.
  • the number of the elastic members 70 of the second elastic member group is three, and the angle between the adjacent two elastic members 70 is 120 degrees.
  • the upper end of the power system 20 is provided with an air outlet end 29, and the lower end of the power system 20 is provided with an air inlet end 28.
  • the positions of the plurality of elastic members 70 of the first elastic member group in the circumferential direction of the power system 20 and the plurality of elastic members 70 of the second elastic member group in the circumferential direction of the power system 20 are respectively A correspondence.
  • the elastic member 70 can provide a uniform supporting force to prevent the elastic member 70 of the first elastic member group from being displaced from the elastic member 70 of the second elastic member group to cause excessive sway of the power system 20 during operation.
  • the motor 23 drives the impeller 22 to rotate, and the air is sequentially sucked by the impeller 22 through the air inlet 121, the muffling structure 40, and the air inlet 211, and the impeller 22 accelerates the air.
  • a high-speed airflow is formed, and the high-speed airflow sequentially passes through the gas passage 25a and the diffuser 24, enters the air passage of the fan head 102, and finally is ejected from the air outlet slot 1021, so that the high-speed airflow ejected from the wind gap 1021 can be sucked.
  • the surrounding air forms a wind to achieve a cooling effect for the user.
  • the first through hole 412 of the first muffling cover 41 enters the connecting pipe 44 through the connecting pipe 44 and the second guide.
  • the through hole 422 enters the second muffling chamber 421 and then enters the power system 20 via the air inlet 211.
  • noise enters the cavity portion 4111 from the through hole 441 to be reflected and removed, and is absorbed by the sound absorbing cotton.
  • the air enters the second muffler cover 42 from the first muffler cover 41 belongs to a process of flowing into a large cross section from a small cross section.
  • the sound is attenuated and reduced during the process from a small cross section to a large cross section. .
  • the muffling structure 40 of the embodiment of the present invention forms an impedance composite perforated tubular muffler, which forms a process when the airflow passes, the sound is attenuated and reduced, and the noise is reduced, and the sound is difficult to reverse from the first
  • the second muffler cover 42 is transmitted through the connecting pipe 44, and the sound is reflected back and forth to be consumed, and the energy of the noise is blocked and attenuated.
  • the curve a is a sound pressure level curve when the vaneless fan 1000 omits the muffling structure 40
  • the curve b is The sound pressure level curve when the sound absorbing structure 40 is provided in the bladeless fan 1000.
  • the ordinate SPL indicates the sound pressure level of the sound generated by the bladeless fan 1000
  • the abscissa f indicates the frequency of the sound generated by the bladeless fan 1000.
  • the susceptor 100 of the embodiment of the present invention includes:
  • the housing 10 includes an outer wall 12, the outer wall 12 is formed with an air inlet 121;
  • the power system 20 is configured to draw in air through the air inlet 121 and establish an air flow, and the power system 20 is formed with an air inlet 211;
  • the sound absorbing structure 40 disposed in the housing 10, the sound absorbing structure 40 includes:
  • the first muffler cover 41, the first muffler cover 41 is formed with a first muffler cavity 411, the first muffler cover 411 is provided with a first through hole 412 communicating with the air inlet 121;
  • the second muffler cover 42 is received in the first muffler chamber 411.
  • the second muffler cover 42 surrounds the air inlet 211.
  • the second muffler cover 42 is formed with a second muffler cavity 421 communicating with the air inlet 211.
  • the acoustic cover 42 is provided with a second conductive via 422 that communicates with the second muffling cavity 421;
  • the bladeless fan 1000 of the embodiment of the present invention includes a fan head 102 and a base 100 of any of the above embodiments.
  • the fan head 102 is disposed on the base 100 for injecting airflow established by the power system 20.
  • the cavity portion of the first muffling cavity 411 between the first muffling cover 41 and the second muffling cover 42 is communicated by the through hole 441 of the pipe wall of the connecting pipe 44. 4111, when the power system 20 is in operation, noise generated when air is taken in from the air inlet 121 enters the cavity portion 4111 through the through hole 441, and noise is reflected and consumed inside and outside the cavity portion 4111, thereby reducing the bladeless fan. 1000 working noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une base (100) et un ventilateur sans pales (1000). La base (100) comprend : un boîtier (10), le boîtier (10) comprenant une paroi externe (12), et la paroi externe (12) comportant une entrée d'air (121) formée sur ladite paroi externe ; un système électrique (20) disposé à l'intérieur du boîtier (10), le système électrique (20) comportant une entrée d'air (211) formée sur ledit système électrique ; et une structure d'élimination de bruit (40) disposée à l'intérieur du boîtier (10). La structure d'élimination de bruit (40) comprend : un premier couvercle d'élimination de bruit (41), le premier couvercle d'élimination de bruit (41) possédant une première cavité d'élimination de bruit (411), et le premier couvercle d'élimination de bruit (41) étant pourvu d'un premier trou métallisé (412) en communication avec l'entrée d'air (121) ; un second couvercle d'élimination de bruit (42) reçu dans la première cavité d'élimination de bruit (411), le second couvercle d'élimination de bruit (42) entourant et recouvrant l'entrée d'air (211), le second couvercle d'élimination de bruit (42) possédant une seconde cavité d'élimination de bruit (421) en communication avec l'entrée d'air (211), et le second couvercle d'élimination de bruit (42) étant pourvu d'un second trou métallisé (422) en communication avec la seconde cavité d'élimination de bruit (421) ; et un tuyau de raccordement (44), le tuyau de raccordement (44) raccordant le premier couvercle d'élimination de bruit (41) et le second couvercle d'élimination de bruit (42) et faisant communiquer de manière correspondante le premier trou métallisé (412) et le second trou métallisé (422), une paroi de tuyau du tuyau de raccordement (44) étant pourvue d'une perforation (441), et la perforation (441) étant en communication avec une partie de cavité (4111) de la première cavité d'élimination de bruit (411) entre le premier couvercle d'élimination de bruit (41) et le second couvercle d'élimination de bruit (42). La base (100) décrite ci-dessus peut réduire le bruit pendant le fonctionnement du ventilateur sans pales (1000).
PCT/CN2017/078466 2017-03-28 2017-03-28 Base et ventilateur sans pales WO2018176234A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780001080.4A CN107636315B (zh) 2017-03-28 2017-03-28 基座及无叶风扇
PCT/CN2017/078466 WO2018176234A1 (fr) 2017-03-28 2017-03-28 Base et ventilateur sans pales

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/078466 WO2018176234A1 (fr) 2017-03-28 2017-03-28 Base et ventilateur sans pales

Publications (1)

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WO2018176234A1 true WO2018176234A1 (fr) 2018-10-04

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WO (1) WO2018176234A1 (fr)

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KR20160148917A (ko) * 2015-06-17 2016-12-27 주식회사 도무스씨앤엠 날개 없는 선풍기의 본체 틸팅장치
CN106321525A (zh) * 2016-11-15 2017-01-11 美的集团股份有限公司 基座及无叶风扇
CN205937178U (zh) * 2016-08-15 2017-02-08 宁波小恐龙电器有限公司 一种带导向板的无叶风扇

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GB2468331B (en) * 2009-03-04 2011-02-16 Dyson Technology Ltd A fan
CN103912479A (zh) * 2013-01-06 2014-07-09 任文华 无叶风扇
CN106368967B (zh) * 2016-11-15 2018-09-14 广东美的白色家电技术创新中心有限公司 基座及无叶风扇

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Publication number Priority date Publication date Assignee Title
GB2502106A (en) * 2012-05-16 2013-11-20 Dyson Technology Ltd Bladeless fan
CN104819132A (zh) * 2015-05-27 2015-08-05 广东美的环境电器制造有限公司 用于无叶风扇的基座及无叶风扇
KR20160148917A (ko) * 2015-06-17 2016-12-27 주식회사 도무스씨앤엠 날개 없는 선풍기의 본체 틸팅장치
CN205937178U (zh) * 2016-08-15 2017-02-08 宁波小恐龙电器有限公司 一种带导向板的无叶风扇
CN106321525A (zh) * 2016-11-15 2017-01-11 美的集团股份有限公司 基座及无叶风扇

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